Arthur f



(No Model.) I

- A. F. STANLEY.

- ELECT-RIG BELL.

Patented Mar. 18, 1890'.

UNITED STATES PATENT OFFICE.

ARTHUR F. STANLEY, NEW YORK, N. Y.

ELECTRIC BELL.

SPECIFICATION forming part of Letters Patent No. 423,707, dated March 18, 1890.

' Application filed January 20, 1890. Serial No. 337,457. (No model.)

To all whom it may concern:

Be it known that I, ARTHUR F. STANLEY, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Electric Bells; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to certain improvements in the construction of electric bells, whether the same be of the type known as vibrating or that known as single stroke. Ordinarily such devices are constructed with an electro-magnet in proximity to a gong or other sounding structure with an armature presented to the blows of the electro-magnet, and to such armature has been attached a length of spring-wire having at its outer end a ball or hammer for the purpose of delivering the blow to the gong. The construction of the parts has been such that three pieces have been necessary; first, the armature,

second, a piece of spring-wire, and, third, a separate ball or hammer screwed or soldered to the wire.

The object of myinvention is to avoid this complexity in the construction, and. to that end my invention consists in forming the armature, its extension, and the hammer all in a single piece, as hereinafter described.

In the accompanying drawings,which form part of this specification, Figure 1 illustrates the ordinary mode of construction, showing a fiat armature, a spring-wire extension, and the ball or hammeigall three pieces being separately formed and then joined together for use. Fig. 2 shows the blank which I have adapted in carrying out my invention. Fig. 3 shows the same with the shank twisted and bent so as to place the various portions in op erative relation. Fig. 4 is a front elevation of an electric hell with myinvention applied to it, the cover being broken away, and showing the relations.

In practicing my invention I first stamp or punch out of a sheet of iron or steel of proper 5o thickness a blank having the armature porti'on a, the shank b, and the disk or hammer c. I also prefer to leave at the lower end of the armature the projections d, which are afterward. reduced with a milling-tool to form thetrunnions for the proper pivoting of the armature. As such bells are most generally constructed with the electro-magnets in the same plane as the plane of the gong, and as the hammer should be arranged to deliver its blow 011 edge, I simply twist the shank b, as shown,and then bend the shank in a suitable manner, so as to occupy the ordinary position with relation to the gong. Constructed in this manner the total Weight of the movable drawings, and afterward twisting and bending it to the required configuration, there is so little Waste in the stamping or punching that it need not be taken into account.

Having thus described the nature and objects of my invention, what I claim is as follows: 7

1. As an article of manufacture, the hereindescribed elecLro-magnetic hammer for electric bells, consisting of the armature a, the shank I), and the disk or hammer cin one fiat integral piece of iron or steel, with the disk or hammer turned at substantially a right angle to the plane of the armature.

' 2. As an article of manufacture, the hereindescribed electro-magnetic hammer for elec-' tric bells, consisting of the armature a, the integral shank b, and the disk or hammer c in one flat integral piece of iron or steel, the shank b being twisted so as to place the disk 0 at right angles to the plane of the armature.

In testimony whereof Iafiix my signature in presence of two. witnesses.

ARTHUR F. STANLEY.

Witnesses:

T. J. MCTIGHE, GEO. WoRTHI G'roN. 

